There's a degree to which some plants get classified as needing "high light" since in the past only people keeping high light tanks also used CO2 and ferts.

There are an increasing number of hobbyists now that use CO2 even on what would traditionally be considered "low light" tanks, and it's been learned that many plants actually need the CO2 more than the light. I suspect that Myrio (which has never done well for me in my own low tech tanks without high light OR CO2) is one of these plants.